Vibrating mechanism



A 2 Sheets-Sheet Nw. AW

Q i c) Filed Nov. 15, 1928 V. E. FLA NAGAN ET AL VIBRATING MECHANISM April 12, 1932.

V. E. FLANAGAN ET AL VIBRATING MECHANISM 'Filed Nov. 15, 1928 2 Sheets-Sheet 2 m@ d N FL QN WW m km, \|Wm, mw wN mw mm. m .m.|vV W" 17.1 NX A .v m m, QM v n n ww Aww @l .mm KM/ mw n 1,. Nw l., W JA v. f/ NNW v April 12, 1932.

Patented Apr. 12,y r1932' vIoToR n'rLANAG-AN, or WAUWATosA, WISCONSIN, AND LoUIs T. sIoxA, or BONNE 1 TERRE, MISSOURI y vIjenATING MEGHANISM Application 1ed'November`15, 1928. Serial No. 319,511.

kThis invention pertains `to vibrating mechanisms, such as are used to impart vibratingk movement to concentrator tables and the like. One of the objects ofthis invention is to 5 provide avibrating mechanism adapted to impart an oscillating movementV which is quicker in one direction than in the reverse direction. I n i y Another object is to provide such mechanism which will produce an oscillating movement in whichthe reversal of movement at one end of the travel is more sudden than at the opposite end.

Anotherobject is to provide such mechanism by which the amplitude of.y the oscillatingmovement may beV adjusted in a simple manner.

Another object is to provide such a movement which'will be self-lubricating throughv out. I 1

Another object is to provide such a movement suitably housed so asto prevent the accumulationy of dirt therein.

Another object is to providesuch mechstruction and reliable in servicaq Furtherobjects willcappear from the following description,- taken-in connection with vrtheaccompanying drawings, in which.-

Figure y1 is a planview of a mechanismembodying` this invention, withthe Lcover y'of the housingfremoved so, as tofdisclose theinterior parts; f

kFigure 2 is a sectionon line 2-2 of Figure 1; and i l f v Figure 8 isla diagram illustrated the na.- ture of the movement imparted by this mechanism. i

In the operation of concentrator tables in purpose of separating the various ingredients thereof, the nature of the movement imparted to the table is of great importance. f The stratification of the material on the table and its movement along the-table are very sensitive to changes in the nature of the movement, suchvas the rapidity Aof movement in eachy direction, aswellas the suddenness of reversal at the. end of each stroke. In most cases it is desirable to provide a movement which will anism whichV shallbe very rugged in conwhichy granular material is handled for the be more rapid in one ydirection than inthe other and in which a sudden reversal takes place at the end of one stroke while a morey gradual reversa-l occurs at the end of the opposite stroke. The mechanism of this inf vention is designed to produce such difference 'driving element 6. The shaft 5 has fixed thereon an eccentric 7,which in turn carries a roller 8. The roller 8 has abroad face, as shown in Figure 1, and is formed with openings 9 in its periphery, which communicate with inwardly directed spiral channels 10 eX- tending' tol the inner bore of the roller. These channels are intended to catch a certain yquantity of the oil contained inthe casingl which lis splashed up during the operationof the device and convey the same to its inner bearing on the-eccentric 7 so as to lubricate said bearing.; y

Mounted in bearings 11 on the casingl is a pivotnshaft 12.- The lshaft 12 has pivoted thereon a lever 13 provided on one side of the pivot 12 with a concave face 14 adapted for engagement with the cam roller 8 and at its yother end' with a clamping socket-15' adapted toy receive a`bar16 and to clampy the .same thereim-V The lever 13is kprovided with a trough-17 adapted to collect oil splashed up l,

The bar 16 is a short, heavy bar `clamped Y. the socket 15 and yextending kvertically' upas i' wardly froml the arm 13. This bar has clamped to its upper end a bracket 19 having bearings 2O for a pivot pinorshat'21. The` bracket 19 also has a trough 22 adapted kto collect the splashed oil 'which is 'conveyed fixed by clamping the bracket between saidr nuts. Upon fixing such adjustment, the

5 bracket 19 is, of course, securely clamped'to the vbarl by means of the clamping stud 27. The ,positions ol the bar 16 and the screw 24 in parallel relation with one another and spaced from one another, also provide a con- 0 struction which forms, in effect, a rigid beam "extending between the lever 13 and the bracket 19. This beam is subjected to cross bending stresses during the operation of the' mechanism, and the relative positioning of the elements 16 and 24 is such as to cause them Mto share the stresses involved. The arrangement is such that the stresses placed upon these two members are more in the nature of tensile or compressive stresses than cross aqnbending stresses. v Accordingly, a strong and rigid construction is thereby obtained.

Fixed to the ends of the pivot pin 21 is a oke 2,8 provided with a screw socket 29 adapted for threaded engagement with a tenmisionv bar 30. The bar 30 is thus adjustablyl 4connected with a yoke 28. A- nut 31 is provided tosecure the bar 30 in adjusted position. The bar 30is attached to the device to be oscillated, usually a concentrator table, not shown 19in the drawings. In accordance with the "usual practice, the concentrator table is tensioned fso as to exert a pull on the bar 30. This arrangement is illustrated in diagrammatic form in Figure 1, in which 32 represents 4Q ,a portion of the frame or supportof the table, 33a bar connected to the moving part of the table, 34 a spring bea-ring at one end against the part 32 and at its other end against a nut 35on the bar 33. The spring 34-provides 50, .,the tension which moves the table rearwardly after a forward stroke in response to the pull offthe bar 30.

The casing 1 is adapted to be filled with lubricating oil about to the level of the line A. 55..,One end of the casing is provided with a xperforation y36'through which the bar 30 passes out to the concentrator table. This perforation is large enough to permit the necessary vertical adjustment of the bar 30 qand is closed by an adjustable closure plate 37 K secured by screws 38 or the like. The casing is dividedinto two compartments by a transversel partition39. This serves notonlyy to strengthen-i the casing, but also provides that,y

. any. dirt ywhichmayv enter through the opening 36 will be caught in the right-hand compartment and not permitted to contaminate the oil in the other compartment. Fins 40 on the sides of the casing may be arranged to collect the splashed oil and convey the same to the bearings 4 of the main drive shaft. The cover 41 of the casin ,is provided `with a locking lug 42 adapte to take under a lug 43 on the casing. At the other end of the cover, a pair of lugs 44 extends downwardly on each side of a lug 45 on the casing so that when a suitable lock 46 is locked through perforations47 in the lugs 44, said lock will, in cooperation with the lug 45, prevent the removalof thecover, the lugs 42 and 43 preventing the disengagement of the o posite end of the cover. In this way the meclianism is secured againstftamperingor unauthorized adjustment.

In the operation of this mechanism, the shaft 5 being driven from any-,suitable source of power, the rotation of the cam 7 will cause the roller 8 to roll along the concave face 14 of the lever 13. This movement will cause the lever 13 to rock on the pivot shaft12= in response to the rotationA of the cam 7; Thebar 16 forms with-the lever 13a bell crank which causes'ahorizontal oscillation ofl the pivot pin 21 in response to the oscillation of-` said bell'crank. This movement, of the pin 21 causes a correspondinglongitudinal oscillation of the bar v30 and the concentrator table Y or other device connected thereto. Assuming rotationas indicated by thearrowB, it will be noted that-the down stroke of the lever 13 takes lace during rotation of the shaft 5 throug vthe arc C. 'Iyhils'causesa movementofthe pivot pin 21fromthe point D to the point E, The-returnv movement of the lever 13 takes place duringftherotation of the shaft-5 through, the'an le .F, which causes a return movement-,of t ve pivotV pin 21 from D tofE.' It rwillbe'notedth'at with a uniform rotationofthe shaft 5, thereturn movement takes place i muchy lmore quickly than the forward-movemepnt.` The diagram of Figure 3 illustrates the natureo this oscillation.V Inthis diagram the ordinates represent travel of the bar 30 while the' ab'scissae represent time intervals.y It will be 4noted that the reversal at the point G is much more Y sudden than thatv at thev point H, whilethe travel froIrrH- tovG is much more rapid than` that from G to H.

It will be seen, therefore, that this invention provides `an oscillating mechanismof very rugged construction whichiiseasily ad-r justable andy which f may be radaptedtok various types `of, oscillating movements` The. length of the b'ar161between thelpivots 12 and 21, which forms one arm ofthe bell crank,

"may be adjusted in a simpleandpositive manner. The constructionY is suchth'atthe various members are subjected mostly to longitudinal stresses, particularlyr the ,bar 16.'l

Ample lubrication is provided, and the arrangement is such that the lubricating medium is not easily contaminated.

Itv will be clear that by selecting the relative positions of the shafts 5 and 12and the curvature ofthe face 14 of the lever 13, a great :variety of movements can beobtained.

It will be understood that certain features of this invention may be useful without regard to other features thereof and that subcombinations may be used without includingthe entire mechanism.` Such sub-combinations are, accordingly, a part of this inven-v tion. It is further obvious that various changes may be made, within the scope ofl clamped thereto and providing therewith a bell-crank, and a tension element pivoted to said bar to be reciprocated thereby.

2. Vibrating mechanism of the character described, comprising, a shaft having an eccentric thereon, means for driving said shaft, a roller on said eccentric having lubricating passages spirally thereof, a lever pivoted adjacent saidy shaft and having a concave face engagingsaid roller, a bar adjustably clamped to said lever and providing therewith a bell-crank, a pivot bracket adjustably mounted on said bar, and a tension element pivoted to said bracket to kbe reciprocated thereby.

3. Vibrating mechanism of the character described, comprising, a shaft having an eccentric thereon, kmeans for driving said shaft, a roller :having lubricating ypassages: adapted to pick up lubricant and convey the same to its bearing, a lever pivoted adjacent said shaft and having a concave face engaging said eccentric, a bar adjustably clamped to said levery and providing therewith a bellcrank, a pivot bracket mounted on said bar,v

and a tension element pivoted to said bracket to be reciprocated thereby.

4. Vibrating mechanismof the character described, comprising, a shaft having an eccentric thereon, means for driving said shaft, a lever pivoted adjacent said shaft and havi ing-a face engaging said eccentric, a bar fixed to said lever and providing therewith a bell-crank, a housing for said mechanism providing an oil reservoir, a tension element cdnnected to be reciprocated by said -lever and extending through a wall of said housing, and a partition in said reservoir adjacent said wall.

5. Vibrating mechanism of the character described, comprising, a shaft having aneccentric thereon, means for driving said shaft, a lever pivoted adjacent said shaft and having a face engaging said eccentric, a bar xed to' said lever and providing therewith a bellcrank, a housingkfor said mechanism providing an oil reservoir, a tension element connected to be reciprocated by said lever and extending through an opening in a wall of said housing, an adjustable cover for said opening, and a partition in said reservoir adjacent said wall.

6. Vibrating mechanism of the character described, comprising, a shaft having an eccentric'thereon, means for driving said shaft, a lever pivoted adjacent said shaft and having a face engaging said eccentric, a bar fixed to said lever and providing therewith a bellcrank, a bracket adjustably mounted 0n said bar and having a pivot, a rigid member fixed to said lever and to said bracket in parallel relation to said bar, and a tension element pivoted on said bracket pivot to be reciprocated thereby.

7. Vibrating mechanism` of the character described, comprising a supporting` housing having bearings therein, a shaft mounted in said bearings, an eccentric on said shaft, a roller on said eccentric having a spirally arranged passage adapted to pick up lubricant and convey the same to its bearing, a lever pivoted adjacent said shaft and having a concave face engaged by said roller and a tension element connected to said lever to be reciprocated thereby, said housing being adapted to contain lubricant thru which said roller moves.

8. Vibrating mechanism of the character described, comprisinga supporting housing having bearings therein, a shaft mounted in said bearings, an eccentric on said shaft, a roller on said eccentric having a spirally arranged passage adapted to pick up lubricant and convey the same to its bearing, a ylever pivoted adjacent said shaft and having a concave face engaged by said roller, and a tension element connected to said lever to be reciprocated thereby, said housing being adapted to contain lubricant thru which said roller moves and having a partition adapted to divide the lubricant.

In testimony whereof I afiix my signature this 8th day of November, 1928.

VICTOR E. FLANAGAN. In testimony whereof I afiix my signature this 6th day of November, 1928.

LOUIS T. SICKA. 

